@techreport{NBERw0618,
 title = "The Role of Seniority at U.S. Work Places: A Report on Some New Evidence",
 author = "James L. Medoff and Katharine G. Abraham",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "618",
 year = "1981",
 month = "1981",
 URL = "http://www.nber.org/papers/w0618",
}